FEMALE ELEMENT, HOLDING DEVICE AND PIN SYSTEM FOR EXCAVATORS AND SIMILAR MACHINES Russian patent published in 2020 - IPC E02F9/28 

FIELD: machine building.

SUBSTANCE: group of inventions relates to a female element, a retaining device and a pin system comprising said device, a female member and a male member and intended to provide attachment between female and male elements used in excavators and similar machines. Female body comprises a body with a cavity having a stop end, an open end and walls, wherein at least one of said walls has a first opening extending through said wall. Said wall having a first opening has a second opening, inside which there is a retaining structure or a retaining configuration for attachment of a holding device inside it. Second hole is located between cavity thrust end and first hole and is spaced from said first hole. According to one of the versions, the holding device comprises one elongated element forming a bent part with two arms, which extend from the first bent end to the second end, located opposite to first end. Both arms have free ends on their free ends. Retaining device comprises: attachment means arranged at second end, intended for connection of retainer to one wall or surface inside cavity of female element and formed by hook-shaped ends having extreme free section, which end each arm. Each arm of the device near said bent end has: a first bend which extends in the direction of the hook-like end and behind which the first portion of the shoulder extends, a second bend, which extends behind the first portion on the opposite side relative to the first bend and behind which the second shoulder portion passes, and a third bend which forms the bent end of the retainer. Each of said sections of one arm extends substantially parallel to the corresponding section of the other arm.

EFFECT: technical result is fast replacement of female element.

24 cl, 19 dwg